<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
	</head>
	<body>
		<div id="app">
			<input type="text" v-model="num1" />
			+
			<input type="text" v-model="num2" />
			<button v-on:click="add">=</button>
			<input type="text" v-model="result" />
		</div>
		
		<script>
			// 第三步: 创建一个Vue的实例对象
			var app = Vue.createApp({
				data() {
					return {
						num1:'',
						num2:'',
						result:''
					}
				},
				methods:{
					add:function()
					{
						console.log("执行加法")
						var x = parseInt(this.num1)
						var y = parseInt(this.num2)
						var z = x+y;
						this.result = z;
					}
				}
			});
			// 第四步: 把app挂载到视图上
			var vm = app.mount("#app")
		</script>
	</body>
</html>
